Operation & Maintenance Manual UEAM002603 PC228US -3 PC228USLC -3 HYDRAULIC EXCAVATOR SERIAL NUMBER PC228US-3 - 31936 and up PC228USLC-3 - 31959 and up Unsafe use of this machine may cause serious injury or death. Operators and maintenance personnel must read this manual before operating or maintaining this machine. This manual should be kept inside the cab for reference and periodically reviewed by all personnel who will come into contact with the machine. WARNING